FTM married and drama from past!! 😓

So I’m currently 28 weeks pregnant with my baby boy. Happily married to my soulmate since 2017.

When I was in college - 4/5 years ago, I started hanging out with this guy who was Muslim. Long story short we ended up in a relationship and we both KNEW it would not last anyway as I would never convert to Islam.

When I met my now husband - through family - I was still speaking to this guy and seeing him but as a friend. We weren’t even official! When he found out I was engaged he hit the roof. To the point he went psychotic and started harassing me and my now husband by finding his number online and giving him calls off private numbers.

My husband does not know about this guy, and that I was kind of in a relationship with him, BUT he does know that it was just a ‘friend’ that got obsessive.

I did what I could, change my number and blocked his. However last night (after not hearing from him since may 2016) I ended up getting a text from his number!! I knew instantly who it was but the text was blank and I immediately got worried - thinking how could he have contacted me when his number is blocked. It turns out when I moved from iPhone to iPhone a few weeks ago I didn’t re-block his number. Which got me thinking that he’s probably trying every month or so to get into contact!!

Now that I’m pregnant and life is reallly going well at the moment, I’m worried he will do something like contact my husband or reveal intimate messages or photos that we had once sent to each other a long time ago.

Has anyone ever been in this situation? I really need some advice ladies ☹️. And I really love my husband I don’t ever want to lie to him or bring up my past with another. He loves me so much that I just don’t want to disappoint him 😣

Edit: thank you for the responses ladies. Unfortunately I live in the UK where a restraining order is not put in place until court hearings and sentencings. However, I have informed the police - which I did in 2016 also, so they are aware. Again, thank you for the responses.